Computing time-stamp.



J. 0. WILSON.

COMPUTING TIME STAMP.

APPLICATION FILED SEPT. s, 1903.

Patented Nov. 14, 191 1.

6 SHEETS-SHEET 1.

J. 0. WILSON.

COMPUTING TIME STAMP.

APPLICATION FILED SEPT. e, 1903.

Patented Nov. 14, 1911. 4

6 8HEETS-SHEET 2.

J. 0. WILSON.

1 COMPUTING TIME STAMP.

APPLICATION FILED SBPTQ-B 1903.

Patented Nov. 14, 1911.

6 SHEETS-SHEET 3.

wmw

v J. 0. WILSON. COMPUTING TIME STAMP.

APPLICATION FILED SEPT. 8, 1903.

Patented Nov. 14, 1911.

J. 0. WILSON.

COMPUTING TIME STAMP.

APPLIOATION FILED smms, 1903.

1,008,763, Patented Nov. 14, 1911.

6 SHEETS-SHEET 5.

JUN 101905 54 6- I J UN I 101903 I h Ij J. 0. WILSON. COMPUTING TIMESTAMP.

APPLICATION FILED SEPT.8, 1903.

Patented Nov. 14, 1911.

- GSHEETSSHEET 6.

JOHN C. WILSON, OF BOSTON, MASSACHUSETTS.

COMPUTING. TIME-STAMP.

Specification of Letters Patent.

Patented Nov. 14:, 1911.

Application filed September 8, 1903. Serial No. 172,259.

To all whom it may concern? Be it known that I, J OHIj C. Wrnson, ofBoston, in the county of Sufiolk and State of Massachusetts, haveinvented certain new and useful Improvements in Computing Time-Stamps,of which the following is a specification.

My invention relates to improvements in time printing machines commonlyknown as time stamps.

The apparatus consists of a novel arrangement of parts and connectingand cooperating devices to enable such machines to not only print orrecord the actual times of day and the date when the machine isoperated, but also to automatically compute or calculate and record orindicate the exact amount or value of the time which may elapse orintervene bet-ween two or more successive imprintings to the exactsecond if need be, and it is particularly adapted for use in connectionwith telephone. toll lines switchboards to record the exact time when atoll line conversation begins and when it ends and at the same time toautomatically compute or calculate and record the exact elapsed orintervening time, or to'indicate that the elapsed or intervening timehas not exceeded a certain fixed or predetermined period or time limit.i

My invention consists of certain novel features hereinafter describedand particularly pointed out-in the claims.

In carrying out my invention I utilize the devices for printing andrecording time shown and described in three U. S. patents granted to me,viz': No. 527,918, October 23, 1894; No. 576,644 February 9, 1897, andNo. 637 ,315- November 21, 1899, to which reference may be had.

In the accompanying drawings which illustrate a construct-ion embodyingmy invention, Figure 1 is a perspective view of the machine from theright side, the desk upon which it is mounted being broken away toexpose the main operating or imprinting lever 01' handle below themachine, and the auxiliary lever connected therewith. Fig. 2 is aperspective view of the machine from the left side, the front portionsof the main operating or imprinting lever or handle and the auxiliarylever protruding from underneath being shown as broken off. Fig. 3 is alongitudinal vertical sect-ion of the machine mounted upon, a deskshowing the main complete view vated or printing posltron,

operating or imprinting lever or handle and its connecting auxiliarylever, together with their cooperating parts in their normal position.Fig. 4: 1s a side elevation in perspective of the inner portions of the-main operating or imprinting lever or handle and the connectedauxiliary lever underneath the same, and their cotiperating andsupporting parts. Fig. 5 isa front elevation of the same parts shown inFig.4. Fig. 6 is:a side elevation of .the hour printing device. Fig. 7is a plan view of the same. Fig. 8 is a side elevation of the minuteprinting and computing or calculating device. Fig; 9 is a plan view ofthe same. Fig. 10 is a view of the second printing device in sideelevation. Fig. 11 is a plan view of the printing surface ofthe-secondprinting device. Fig. 12 is a longitudinal vertical section showing partof the base plate of the machine, the main operating lever or handlebeing depressed and the connected auxiliary lever being in the normal ordisengaged position, while the platen frame or carrier together with'itsattached main plunger are shown in the elevated or imprinting position,the auxiliary plunger or lug being represented in its normal or uneevated position. Fig.

13 is a plan -v1ew of the machine from 85 and the tubular socket for themain plunger 7 connected therewith by the four downwardly underneathshowing part of the base plate extending curved arms or spider, togetherwith the main operating or imprinting lever or handle its pivot andsupport and its connected auxiliary lever. Fig. 14 is a plan view of theunder side of the upper'portion of the machine showing a partlal view ofthe devices for feeding the ink ribbon and a 15- is a longitudinalvertical sect-ion showing part of the base plate of the machine, theplaten frame or carrier, the platen and the auxiliary plunger or plugbeing in the eleimprinting lever o-r handle and the auxiliary lever bothbeing shown in the depressed posit-ion. Fig. 15 is a perspective view ofthe main operating or imprinting lever .01: handle from the rear,showing is a partial plan view of the upper side of the-platen frame orcarrier withthe platen and the positioning devices and the base plateunderneath.

of the printing surfaces. Fig.

the operating or the slot and pivot hole through its inner end.. Fig. 16

Fig. 17 is a plan view of the platen. Fig. 18 is a side elevation of theplaten frame or carrier showing the plunger or circular extension withits slotted end and the positionin pin both extending downward from itsunc er side together with the screw eye underneath, the cavity ordepression on top to receive the platen being outlined by the dottedlines. Fig. 19 is a facsimile of an initial imprint made by the machine,showing the hour, minute and second and the initial time limit or periodof one minute. Fig. 20 is a facsimile of two superimposed imprints madeby the machine showing the actual hour, minute, second and date of thetwo imprints, and the number of minutes and'seconds elapsing orintervening between the making of the two imprints. Fig. 21 is aperspective view of the movable cam piece which engages with theauxiliary lever when it and the main operating or imprinting lever orhandle are depressed. Fig. 22 is a perspective view of the supporting orlifting piece which supports the auxiliary plunger or plug and lifts thesame when the main operating or imprinting lever or handle and itsconnected auxiliary lever are depressed. Fig. 23 is a perspective Viewof the type carrier or holder and the dating types-in position therein.Fig. 24 is a perspective view of the meridian printing part and Fig. 25is a top plan view of the printing surface of the same. Fig. 26 is a topplan view of the meridial changing device mounted u on a part-of theclock time train plate. Fig. 27 is a plan view of the under side of thebarrel and actuating coiled spring of the meridian or a. m.p. m.changing device. Fig. 28 is a perspective view of the rear inking ribbonshaft with the inking ribbon and the feeding devices attached thereto.Fig. 29 is a. longitudinal section partly in elevation of the frontinking ribbon shaft and attached spool or bobbin and the devices forrotating the same. Fig. 30 is a facsimile of two superimposed imprintsmade by the machine eighteen seconds apart, showing the hour, minute andsecond of the first and second imprints, and indicating that thepredetermined initial time limit or period has not been exceeded. Fig.31 is a side elevation of the retaining screw pin for the meridian or a.1n.p. m. printing part.

Like letters of reference refer to like parts throughout the severalviews.

As shown in Figs. 1, 2, 3 and 1t,the machine is divided into an upperand a lower portion, the upper portion consisting of a rectangular caseor box A, containing the clock, and carrying the printing dies and theinking ribbon with its feeding devices, while the lower portioncomprises thebase plate B (Figs. 1, 2, 3, 12, 13 and 15) which carriesand supports the imprinting devices and accessories, and these twoportions of the machine are joined together by the screw bolts 6, 7), band 6 passing through the flanges 6, b 6 and b in the upper portion andbeing screwed into corresponding screwthreaded holes (not shown) in thebase plate B of the lower portion of the machine.

The clock C is a time train of usual construction (Fig. 3) and it issuspended in the case A by the dial plate 0 resting on four studs orprojections (one of which G is shown) on the inner edge of the case Aand near the top of the same, and it is fastened in the case A by screws(not shown) passing through the said clock dial C and being screwed intoscrew threads in the said studs or projections, the hour and minutechange wheels mounted in the usual way and being placed between the dialplate C and the upper clock plate C for the visible hands 0, c and c andupon the lower clock plate 0 of the clock C for the hour and minuteprinting parts or hands.

To the top of the case A a bezel or lid D is hinged provided with aglass through which the clock dial C and the hands 0, c and 0 may beseen, and it may be locked to the case A by means of the hasp d and thestaple d. To the bottom of the case A is fastened the bedplate F by thescrews 7, f, f and f" (Fig. 14) assing through the said bed-plate .F andeing screwed into screw-threaded holes (not shown) in the case A. To thelower surface of the bedplate F the graduated hour and minute clock dialprinting die G is attached by the screws 7, f and f passing through thesaid clock dial printing die G and being screwed into screw-threadedholes (not shown) in the bed-plate F, and in the same way the graduatedsecond printing clock dial G is attached to the bed-plate F by thescrews. 7 and f. The M printing die G is firmly fastened in the properprinting position in the bed-plate F as shown in Fig. 14, by beingdriven into a hole in the bed-plate F slightly smaller than itselfincircumference. Into the slot or groove H in the bed-plate F, Figs. 1, 3and 14, the type holder or carrier H, Fig. 23, carrying or holding therequired date print-ing types may be easily inserted or removed, theslot or groove H in the bedplate F and the slot in the type-holder orcarrier H being wider at the top than at the bottom and the dateprinting types being wider across their bases than they are at theirprinting surfaces, the type-carrier or holder H is firmly heldin theslot or groove H in the bed-plate F and the type dates cannot fall outof the carrier or holder H and in order to prevent undue sagging of thetype in the carrier or holder H when they are in the printing position,one side of the carrier or holder H is made slightly flexible oryielding, the other two sides being rigid. The type carrier or holder IIis also provided with a small handle H (Figs. 1, 14 and 23) tofacilitateits insertion into and removal from the slot or groove H inthe bed-plate F. The hour printing part I (Figs: 6, 7 and 14) consistsof a disk I having a narrow ring or rim Paround its pcriphery extendingslightly below its lower surface. Upon this ring or rim an arrowhead orsmall triangle I representing the hour hand is formed or engraved.Extending through the center of said disk I is a hollow shouldered hub Ifitted with two legs or projections 1 I adapted to fit into thecorresponding slot H (Fig. 3) in the disk I which is attached to thehour wheel of the clock G by the sleeve I (Fig. 3). The min ute printingand time computing or calculating part J (Figs. 8, 9 and 14) consistsof. a flat disk J having a straight line J 2 and a center J 3 formed orengraved upon its lower surface representing the minute hand, the saidstraight line extending from near the outer edge of the disk J to thecenter J 3 and a series of graduations J 4 near the outer edge of thedisk J beginning in proximity tothe straight line J 2 and extending overa portion of its circumference, the graduations being shown in thisinstance as spaced into minute and five minute divisions, and when takentogether with the straight line J 2 and the center J 3 representing theminute hand being plotted over one-half of the circumference of the diskJ. The upper surface of the minute printing and time calculating orcomputing part J is provided with a central shoulder J 5 to which isattached two projecting springs J and J the extremities of which arecurved reversely so as to cause the outer edges of the ends of thesprings J G and J 7 to be closer together t-hantheir central portions inorder to positively clutch the prism-shaped center or minute arbor J 8of the clock train C and when clutched to prevent it fro-m mov- 'ingsidewise out of its proper position.

As shown in Figs. 3 and 14, when the hour and minute printing parts Iand J are in operative position, they are in concentric relation withthe clock dial die G and they extend through a hole in the bed-plate F,the

upper surface of the hour-printing part I bearing lightly upon the lowersurface of the countersunk chamber F in the bed plate F and the uppersurface of the minuteprinting part J bearing lightly upon the lowersurface of the hour printingpart I, the shoulder or stem J 5 of theformer with its clutching springs J 6 J 7 extending through the hollowhub I of the latter, the clutching springs J G and J 7 cooperating withthe prism-shaped end of the center arbor J 8 of the clock C to supportboth the hour and minute printing parts I and J in rotative connect-ionwith the clock train C.

Themeridian or a. m.p. m. printing part K (F igs. 3, 24 and 25,)consists of a cylinitsupper extremity which fit into the slot K in thebarrel K of the meridian or a. m.p. m. changing device of the clock C(Figs. 3 and 26), the meridian printing part K when in operativeposition extending through a hole in the bed plate F and being held inits proper position by the point of the retaining screw pin K (Figs. 2and 31) engaging with the groove K of the meridian or a. m.p. m.printing part, the retaining screw pin'K (Fig. 31) being kept inposition by the screw threads on its head cooperating with correspondingscrew threads in the screw-hole which extends inwardly through the sideof the bed-plate F.

The meridian or a. m.p. m. changing device L (Figs. 3 and 26) is mountedupon the lower inclosing plate C of the clock train. C and consists of aratchet wheel L revolving on a stud on the clock plate C The ratchetwheel L has twenty-four teeth, and cooperates with a retaining pawl Land an operating or moving pawl or finger L the latter being attached tothe minute or center arbor of the clock train and acting to move theratchet Wheel L one tooth in advance for every revolution of the centerarbor and the pawl or finger L which is one in each hour.

Mounted on the same stud with the ratchet wheel L is the barrel K havingthe slotted hub K and being held in position by a washer and pin, thewasher being slipped over the stud and the pin passing through a hole inthe same. Inside of the barrel K is a small coiled flat spring K one endof which is fastened to a pin ,K", and the other end of which isattached to the pin 1 on the upper surface of the ratchet wheel L, whenthe barrel K and the ratchet wheel L are in their working positions. Thebarrel K?- also is provided with a tooth or projection I 11 on itscircumference which cooperates with the loose pawls K and K mount edupon studs on either side, of the ratchet wheel L. These pawls bearlightly upon the upper surface of the guide track or ring K and areprovided with pins extending downward far enough to retain the pawls inposition inside of the guide track or ring K attached to the uppersurface of the ratchet wheel L. At one point this guide track or ring Kextends outwardly in the form of a loop K and nearly opposite thisoutward extension or loop K in the guide track or ring K a wedge-shapedpiece K is fastened to the surface of the ratchet wheel L, its ofiicebeing to alternately deflect one or the other of the pawls K and K ofthe guide track or ring K every twelve revolutions of the center arborof the clock train. v

The operation of the meridian or a. m. m. changing device is as follows:The ratchet wheel L is advanced one step for every'revolution of thecenter arbor of the clock. train by means of the pawl or finger Lattached to the said center arbor as before mentioned, and one of thepawls K and lK being in engagement with the tooth or projection K thebarrel K remains stationary and as the ratchet wheel L moves forward asdescribed, the internal spring K inside of the barrel K is wound untilthe wedgeshaped plate K on the ratchet wheel- L comes into contact withthe downwardly extending pin of one of the pawls K and K and deflectingit into the loop K of the guide track or ring K the pawl is therebythrown out of engagement with the tooth or projection K on the barrel Kandthe latter under stress of the internal spring K revolves one-half ofa revolution when the tooth or projection K becomes engaged with theother pawl, the process being repeated every twelve revolutions of thesaid center arbor of the clock train, or every half a revolution of theratchet wheel L. From this description it is plain that the legs orprojections K and K of the meridian or a. m.p. n. printing part K,(Figs.3 and 24) being in engagement with the slot K in the hub of the barrel Kthe former will have the position of its printing letters A and Palternately reversed every twelve hours, and on account of the printingplaten covering only the letter that happens to be in the insideposition, that will be the only one that will be printed.

The second printing part M (Figs. 3, 10 and 11) consists of arectangular and preferably unitary piece of metal with a straight lineand center representing the second hand engraved upon its lower surfacein printing form, the inner portion of the line and the center beingslightly lower in height than the outer portion of the line (as shown)for a purpose hereinafter (explained. The second printing part M is alsoprovided with a shoulder 112/ into which a small shaft m is fitted andby means of the screw m the collar 722. connected with vthe upper end ofthe spiral spring 772, is

fastened to the lower end of the second shaft m of the clock C while thecollar m connected with the lower end of the said spiral spring m isattached to the shaft m3 of the second printing part by the screw mprinting part extends through a guide hole in the bed plate F and thevertical adjustment of the second printin part M of the second shaft 922of the cloc C is such that it is suspended just out of contact with thelower surface of the bed plate F in order that there may be no frictiondeveloped between the surfaces of the second printing part M and the bedplate F which if it existed would cause the clock C to keep irregulartime or perhaps to stop it altogether.

The case A is further provided with front and rear extensions or casingsE, E (Figs. 1, 2 and 3) circular in shape adapted to receive and supportthe inking ribbon E and its feeding devices. The inking ribbon E iswound on wooden spools or bobbins 1E] and E (Figs. 3, 28 and 29) havinghollow interiors to allow the shafts e and 6 (Figs. 1, 2, 3, 28 and 29)to be passed through them, and each of the shafts e and e are providedwith holes near their outer ends adapted to receive split pins orcotters e and e and with splines or studs (as shown) adapted to fit intocorresponding recesses in the ends of the wooden spools or bobbins E andE to prevent them from turning or slipping upon the shafts e and 0 asshown in Fig. 29. The front inking ribbon shaft 6 is also fitted with aknurled thumb piece 6 having an outwardly extending pin or projection 6,(Figs. 1 and 29) to enable the said front shaft 6 to be easily rotatedwhen desired. Upon the said front shaft 6 is also mounted the loosecircular washer e and between it and the shoulder a of the thumb piece ais placed a loose friction spring washer c The rear inking ribbon shaft6 is likewise fitted with-a loose circular washer 6 (Figs. 1 and 28) andthe loose friction spring washer 0 but instead of the knurled thumbpiece 6 it is provided with the ratchet wheel 6 having the hub e, thefriction spring washer 6 being placed between the hub e and the loosecircular washer e In order to prevent the inking ribbon E from draggingover the time printing parts and the other printing surfaces which wouldbe liable to interfere with the proper operation of the clock C, theguide pieces N and N (Figs. 1, 2 and 3) are attached to the outside ofthe front and rear inking ribbon -or bobbins E and E to which they arekeyedby the splines or projections as shown in Fig. 29, the said shaftsbeing held in place by the cotters or split plns e and e bearing againstthe bosses n", n? (Fig. 2)

on the outside of the inking ribbon chambers 13o 5, 12, 1'3 and 15) thetwo ears 0",

into the said recesses and at the same time to prevent the shafts e ande from turning too easily. From this it will be seen that when theinking ribbon E and its attachmerits are in position in the machine,that the loose circular washers e and e inclose.

the end of the inking ribbon chambers E and E" while the other ends ofthe same are an integral part of the case A.

- Referring now to the lowerportion of the machine,the base plate B (Fis. 1, 2 and 12) is provided with holes as shown) through which it may befastened to a desk or other suitable support by screws, and it has arectangular aperture or opening 0 (Figs. 3, 12 and 15) from the fourcorners of which the four curved arms or spider O,

0 0 O extend downward and are joined to and support a central piececontaining a main tubular socket 0 (Figs. 1, 3, 4:,

0 extending below the said main tubular socket O serving to support thepivot 0 upon which the main operating or imprinting lever or handle Pturns (Figs. 1, 2, 3, 12,

13 and 15). The imprinting devices are all connected with the base plateB and consist of the platen carrier or frame Q, the platen Q (Figs. 1,2, 3, 15, 16, 17, 18), and the main operating or imprinting lever orhandle P and its connected auxiliary lever P together with the auxiliaryplunger or plug P (Figs. 3, 15 and 16) and their cooperating parts (ashereinafter described).

The platen a fiat rectangular piece of metal having a circular extensionor plunger. Q (Figs. 3, 4, 5, 12 and 15) projecting downwardly from itsunder side adapted to fit into the main tubular socket 0 attached to thebase plate B. The platen frame or carrier Q is also provided with arectangularcavity or depression Q (Figs. 15 and 18) in its upper surfaceadapted to receive and hold the platen Q and to it is attached by meansof the screw Q the slotted standard Q (Fig. 1) through the upper part ofwhich the curved ratchet pawl R (Fig. 1) is pivoted,

and which coiiperates with the toothed ratchet wheel e on the rearinking ribbon feeding shaft 6 The platen frame or carrier Q has alsoattached to it by means of screws the positioning frame or carrier Qconsists of.

pieces Q and Q, (Figs. 1 and 2) and posltioning piece Q is fitted withthe trunnions g and g which carry or support the rod or pivot 9 uponwhich the swinging stop or holding piece 9 turns. The platen frame orcarrier Q is also provided with the hole (Fig. 18) to receive theauxiliary plunger or plug P and has the guiding or positioning pin(Figs. 3, 16 and 18) attached to its under side which extends through aguiding hole in the base plate B, and acts to position the platen frameor carrier Q with relation to the said base plate B.

The main operating or imprinting lever or handle P projects fromunderneath the machine and is shaped to be conveniently grasped by theoperator and it is pivoted very near its inner end of the shoulderedpivot 0 which has its bearings in the two ears 0 O and to prevent itfrom working sidewise out of its place, a cotter or split pin 0 is putthrough a hole near its end (Figs. 1, 3, 12, 13, 15 and 15 The innerextremity of the main operating or imprinting lever or handle P beingalways in contact with the lower end of the plun er Q of the platenframe or carrier Q, t e depression of the former acts to elevate thelatter, the spiral spring 9 (Figs. 3, 5, 12, 13. and 15) attached to theoutside of the main tubular socket O by the screw 9 and to the underside of the platen frame or carrier Q by the screw 9 acting to bringback the said main operating or imprinting lever or handle P and thesaid platen frame or carrier Q to their normal positions when the saidlever P is released by the operator.

Immediately underneath the main operating or imprinting lever or handleP and held in pivotal connection therewith by means of the small pivot79 'which passes through the two ears p and p formed on the under sideof the said main operating or imprinting lever or handle L, and near itsouter end is the auxiliary lever P provided with the roundedhook p atits inner.

end (Figs. 1, 2, 3, 12, 13 and 15) and adapted'to be operated by thestem 79* of the press button p which extends vertically through a holein the main operating or imprinting lever or handle P and contacts withthe upper side of the short end of the auxiliary lever P (Figs. 1, 2, 3and 15) the spiral spring P act-ing to restore it to its normal positionafter it has been released, the stop pin 22 which extendsthrough thestem 72* of the connecting button p serving to retain the same inposition in the main operating or imprinting lever or handle P. Theinner end of the main operating or imprinting lever or handle P is alsoslotted vertically through the pivot hole P (Fi 15") to allow themovable cam piece (Figs. 3, 4, 5, 15 and 21) to be inserted therein, andto be pivoted together with the main operating. or imprinting lever orhandle P upon the pivot the stop piece or finger s (Figs.-8, 4, 5, 12,13 and 15) attached to the bottom of the ear 0 by the screws 8cooperating with the pin 8 on the lower edge of the said movablecampiece S to limit its downward excursion and to keep it in properoperative position. The movable cam piece S is also provided with anengaging tooth or projection 5' adapted to be engaged by or abut againstthe hook end p of the auxiliary lever P when the latter and the mainoperating or imprinting lever or handle P are both depressed.

The lower endof the main plunger Q as shown in Figs. 3, 4c, 5 and 18 isslotted to a sufficient depth to receive the loose flat supporting andlifting piece T having an upward projecting part T and the side projecting tooth or piece T and above the slot the main plunger is bored outto receive the small spiral spring which presses down upon the top ofthe upward projecting part T of the supporting and lifting piece T andkeeps the lower edge of the same in constant contact with the upper edgeof the movable cam piece S. The auxiliary plunger or plug P is fittedinto the small tubular socket O which is situated near the large tubularsocket O occupied by the main plunger Q its upper extremity passingthrough and extending above the depressed platen carrying surface Q ofthe,

platen frame or carrier Q, and into the hole in the platen, while itslower extremity rests upon the upper edge of the tooth or projectingpart T of the supporting or lifting piece T and is kept there by thetension of the spiral spring coiled around the upper part of the saidauxiliary plunger P between the lower surface of the platen frame orcarrier Q and the stop pin T which" passes through the auxiliary plungerQ The upper surfaces of the platen Q and the auxiliary plunger or plug Qare covered with rubber, and the platen Q, is shaped to fit snugly thecorresponding cavity or depressed part Q of the platen frame or carrierQ and besides it is positioned therein by the dowel pin Q It is providedwith a hole Q to receive the auxiliary plunger or plug Q and it also hasan oval shaped hole Q near one edge extending toward the center toprevent both the letters A and P on the merldian or a. m.-p. m. printingpart from being printed at once, that letter alone being printed whichis not in position over the said hole Q, when the imprint is made. Whenthe main operating or imprinting lever or handle P 1s depressed and theplaten frameor carrier Q is elevated the pawl R engages with a tooth ofthe ratchet wheel 6 on the rear shaft 6 of the inking ribbon feedingdevice and when the said main operating or imprinting lever or handle Pis retracted, the inking ribbon E is nooaree moved or fed forwardslightly, and when the inking ribbon E by repeated engagements of thepawl It and the ratchet wheel e has been moved or fed, its entire lengthit may be turned back or rewound upon the front feeding spool or bobbinE by means of theknurled thumb piece a or the pin or projection 0attached thereto.

The operation of the machine is as follows :Tn taking the initialimprint, a card or piece of paper being placed upon the surface of theplaten carrier or frame Q under the swinging stop or holding piece 9which holds the card or piece of paper in position, and with one sideand end against the positioning piece Q, Q the operator depresses themain operating or imprint ing lever or handle P without pressing theauxiliary lever press button p,and the inner end of the main operatinglever or handle P lifts the main plunger Q ofthe platen frame end 79 ofthe auxiliary lever P, the main plunger Q and the platen frame orcarrier Q and the platen Q moving away from the auxiliary plunger orplug P leaving the hole Q} in the platen Q immediately opposite thecentral portion of the second printing part or hand M unfilled when theimprinting is done, the result being that the central portion of thesecond printing part or hand M is not printed and only the impressionfrom the outer part appears in the resultant imprint of 10 h. 46 m. 13s. p. m. June 10 1903 (as shown in Figs. 19 and 20) the imprintedtriangle or arrowhead pointing to the hour, and approximate minute, andthe imprinted minute hand pointing to the exact minute on the printedclock dial, the imprinted series of graduations extending from the imrinted minute hand halfway around the circle of the clock dial being ofno significance in the initial imprint. The graduated second dial isalso imprinted together with the outer end of the second hand pointingto the exact second, and the meridian indicating letters P and M and thedate. To take a second i1nprin't the operator takes the card or paperbear- 1' ing the initial imprint as shown in Fig. 19,

and after placing it in the same position that porting and lifting pieceT and the auxiliary plunger P upward, the upper end of the latterfilling up the hole QFin the platen Q and making its surface continuous,the result being that not only the outer end is printed as in theinitial imprint (shown in Fig. 19) but the entire second hand 1s prlntedas shown in Fig. 20, the

' time recorded being 10b. 48 m. 49 s.

As before stated, the second printing part M is normally suspended bythe spiral spring m out of contact'with the bed-plate F, but when it isbeing imprinted it is forced against the lower surface of the bed plateF by the platen Q, and the clock then winds up the spiral spring m andwhen the platen Q, is retracted, the said spiral spring m uncoils to itsformer position, the result being that the rate of the clock trainremains undisturbed by the stopping of the second printing part while itis being imprinted.

It will be observed that both imprints were made in the same place uponthe same card or paper (Fig. 20) or in other words, that the twoimprints were superimposed or printed one over the other, and that inthe case of the stationary printing parts, 1 the superimposition wasexact, while in the case of the revolving printing parts, so far as thehour indicating arrowhead or triangle is concerned, the time elapsingbetween the two imprints was so short that they appeared to be alsoexactly superimposed. In the case of the minute printing and calculatingpart however, the extent of the superimposition of the two imprints orthe relative overlapping of the two imprints, or in other words, thedifference in phase between the two im prints, records and indicates thenumber of minutes and fractions of a minute, that have elapsed o-rintervened between the two. im-

rints which in this instance is two and one half' minutes, as shown bythe imprint of the minute printing and computing part J.

When it is necessary to determine the elapsed or intervening timebetween two imprints to the exact second, the number of printedgraduations on the second dial imprint intervening between the initialor abbreviated imprint, and the final or complete imprint of the secondhand when taken to gether with the number of minutes indicated by theminute printing and'computing part,

as having elapsed or intervened will indi- I cate the time elapsing orintervening between the two successive imprints to the exact second, oras shown in Fig. 20, 3 min-' utes 36 seconds.

Then the time elapsing or intervening between two imprints is less thana minute, the record made is illustrated in Fig. 20, where 36 seconds isrecorded as having elapsed or intervened between the making of the firstand second imprint. It is obvious that in cases where the elapsing orintervening interval of time is an even minute or a multiple thereof,that the two imprints of the second printing part or hand would besuperimposed, the result being in such a case that only the imprint ofthe complete second hand would appear in connection with the imprintedsecond dial.

If the printing surface of the second printing part were of the sameheight, the tension of the inking ribbon would be apt to cause acomplete imprint of the second hand to be made whether the auxiliaryplunger was in the elevated or imprinting position, or otherwise, and toobviate this difficulty, as before mentioned, the central por tion ofthe second printing part or hand is engraven slightly lower than theouter portion and the surface of the auxiliary plunger when in theimprinting position is a little higher than the surface of the platen,the result of the I arrangement being (as shown) that the outer portionof the second printing part or hand only is printed when the auxiliaryplunger is in its normal or unelevated position and that both thecentral and the outer portion are simultaneously prfnted when the saidauxiliary'plunger is in its elevated position.

It is customary in the administration of telephone toll lines to allowan initial period of time or a time limit of one, two, three or fiveminutes to the customer during which the toll line may be used with anadditional charge. It is advantageous to \have the printed time recordindicate at a glance whether or not the initial time limit or period hasbeen exceeded. In this invention, this is accomplished by leaving a sace or vacancy indicating the time value 0 the desired initial timeperiod or limit between the pointer mark or' index and the initialgraduation on the minute printing and computing part, the result beingthat when the elapsed or intervening time between the first and secondimprints is less than this limit, the two successive imprints of theminute printing hand or pointer will point into the initial time limitis one minute, but it is evident that it could be made any requirednumber of minutes by simply varying the width of the space between thepointer mark or index and the first graduation on the minute printingand computing part to correspond with the initial time period or timelimit required.

In Fig. 30 one imprint of the printing die J (Fig. 9) prints the index(like the hand of a clock) and the semi-circular series of graduations.It Will be noted that the index is separated transversely by somedistance from the nearest graduationof the semi-circular uniform series.The blank space separating these imprints represents or corresponds to atime limit interval. When a second imprint is superposed upon theinitial imprint of the index graduations the second index imprint maypoint to said blank space if the time elapsing between the initial andsuperposed imprints is less than that represented by the blank space. Onthe other hand, the superposed index imprint may point to one of thegraduations if time has elapsed greater than that represented by theblank space. Thus, by the means exemplified by the spaced relation ofthe index and the nearest graduation, applicant provides means forreadily ascertaining at a glance by the appearance of the imprintswhether the time elapsing between initial and superposed imprints hasexceeded a given limit represented by said blank space. For instance,the semi-circular series in Fig. 30 is graduated in minutes, and thespam: between the index and the nearest graduation corresponds to aminute space. This minute space represents a time limit interval of oneminute; and the operator, for'instance, the telephone operator, canreadily ascertain after superposing an imprint Whether the time limithas exceeded the one minute, by simply noting whether or not the secondsor superposed index imprint points to or beyond the blank space betweenthe initial index and graduation imprints;

I do not limit neyself to the arrangement and construction shown as thesame may be varied without departing from the spirit of my invention.Having thus described the nature of my invention, and set forth aconstruction embodying the same, what I claim as new and desire tosecure by Letters Patnt of the United States is:

1. In a machine for printing or recording the time of day, and computingand recording or indicating the time elapsing or intervening betweensuccessive imprints, a stationary clock dial printing die, a timeprinting and computing part adapted to print a representation of a clockhand or pointer to cooperate with the imprint from the said clock dialprinting die and indicate the time of day combined with a series ofprinting marks or graduations extending over part of oosgres thecircumference of the said time printing and computing part, and apositioning device to enable successive imprints from the said timeprinting and computing part to be superimposed, the extent or degree ofthe superimposition of the said successive imprints from the said timeprinting and computing part indicating and recording the time elapsingor intervening between the said successive imprints.

2. In a machine for printing or recording the time of day, and computingand recording or indicating the time elapsing or intervening betweensuccessive imprints, a stationary clock dial printing die, a rotatabletime printing and computing part adapted to print a representation of aclock hand or pointer to cooperate with the imprint from the said clockdial printing die and indicate the time of day combined with a series ofprinting marks or graduations' extending ever part of the circumferenceof the said rotatable time printing and computing part, and apositioning device to enable successive imprints, from the saidrotatable time printing and computing part to be superimposed, theextent or degree of the superimposition of the said successive imprintsfrom the said rotatable time printing and computing part indicating andrecording the time elapsing or intervening between the said successiveimprints.

3. In a machine for printing or recording the time of day, and computingand recording or indicating the time elapsing or intervening betweensuccessive imprints, a stationary clock dial printing die, a timeprinting and computing part adapted to print a representation of a clockhand or pointer to cooperate with the imprint from the said clock dialprinting die and indicate the time of day combined with an imprintingplaten, a series of printing marks or graduations extending over part ofthe circumference of the said time printing and computing part, apositioning device to enable successive imprints from the said timeprinting and computing part to be superimposed, the extent or degree ofthe superimposition of the said successive imprints from the said timeprinting and computing part indicating and recording the time elapsingor intervening between the successive imprints.

4. In a machine for printing or record ing the time of day, andcomputing and recording or indicating the time elapsing or interveningbetween successive imprints, a stationary clock dial printing die, arotatable time printing and computing part actuated to a pro-determinedrate of rotationby a clock time train, and adapted to print arepresentation of a clock hand or pointer to cooperate with the imprintfrom the said clock dial printing die and indicate the time. of daycombined'with a series of printing lti weaves marks or graduationsextending over part of the circumference of the said rotatable timeprinting and computing part, and a positioning device to enablesuccessive imprints from the said rotatable time printing and computingpart to be superimposed, the extent or degree of the superimposition ofthe said successive imprints from the said rotatable time printing andcomputing part indicating and recording the time elapsing or interveningbetween successive imprints.

5. In a machine for printing or recording the time of day, and computingand recording or indicating the time elapsing or intervening betweensuccessive imprints, a stationary clock dial printing die, a rotatabletime printing and computing part actuated to a predetermined rate ofrotation by a clock time train, and adapted to print a representation ofa clock hand or pointer to cooperate with the imprint from the saidclock dial printing die and indicating the time of day, combined with animprinting platen, a series of printing marks or graduations extendingover part of the circumference of the said rotatable time printing andcomputing part, and a positioning device to enable successive imprintsfrom the said rotatable time printing and computing part to besuperimposed, the extent or degree of the superimposition of the saidsuccessive imprints of the said rotatable time printing and computingpart indicating or recording the time elapsing or intervening betweenthe said successive imprints.

6. In a machine for printing or recording the time of day, and computingand record 'ing the time elapsing or intervening between successiveimprints, a stationary clock dial printing die, an hour hand printingpart cooperating with said clock dial printing die, a minute printingand computing part adapted to print a representation of a minute hand orpointer to cooperate with the imprint from the said clock dial printingdie combined with a series of marks or graduations extending over a partof the circumference of the said minute printing and computing part, anda positioning device to enable successive imprints to be superimposed,the time of day being conjointly imprinted by the said'clock dialprinting die, the said hour printing part and the said representation ofa minute hand or pointer on the minute and computing part, and theelapsing or intervening time between successive imprints being computedand recorded or indicated by the extent or degree of the superimpositionof the said successive imprints from the said series of marks orgraduations, extending over a part of the circumference of the saidminute printing and computing part.

7 In a machine for printing or recording the time of day, and computingand recording or indicating the time elapsing or intervening betweensuccessive imprints, a stationary clock dial printing die, an hour handprinting part cooperating with the ,said clock dial printing die, aminute printing and computing part adapted to print a representation ofa minute hand or poihter to cooperate with the imprint of the said clockdial printing die combined with an imprintin g platen, a series of marksor graduations extending over a part of the circumference of the saidminute printing and vcomputing part, and a positioning device to enablesuccessive imprints to be superimposed; the time of day being conjointlyimprinted by the said clock dial printing die, the said hour printingpart and the said representation of a minute hand or pointer on the saidminute printing and computingpart and the elapsing or intervening timebetween successive imprints being computed and recorded or indicated bythe extent or degree of the superimposition of the said successiveimprints from the said series of marks or graduations extending over apart of the circumference of the said minute printing andcomputing'part. I

8. In a machine for printing or recording the time of day, and computingand recording or indicating the time elapsing or intervening betweensuccessive imprints, a stationary clock dial printing die, an hour handprinting part. actuated to predetermined rotation by a clock time trainand cooperating with the said clock dial printing die, a minute printingand computing part actuated to a predetermined rotation by a clock timetrain and adapted to print a representation of a minute hand or pointerto cooperate with the imprint of the said clock dial printing diecombined with a series of marks or graduations extending over a part ofthe circumference of said minute printing and computing part, and apositioning device to enable successive imprints to bensuperimposed, thetime of day being conjoint-1y imprinted by the said clock dial printingdie, the said hour printing part, the said representation of a minutehand or pointer on the said minute printing and computing part, and theelapsing or intervening time between successive imprints being computedand recorded or indicated by the extent or degree of the superimpositionof the said successive imprints from the said series of marks orgraduations extending over a part of the circumference of the saidminute printing and computing part.

9. In a machine for printing or recording thetime of day, and computingand printing or recordingthe time elapsing or intervening betweensuccessive imprints, a statlonary clock dial printing die, a graduatedseconds dial printing die, an hour hand prlntmg part, a minute printingand computing partadapted to print a representation of a combined withan actuated clock time train for said hour, minute and seconds printingparts, a series of marks or graduations extending over a part of thecircumference of the said minute printing and computing part, and aPOSltlOIllIlg device to enable successive imprints to be superimposed,the time of day being conjointly imprinted by the said clock dialprinting die, the said hour printing part, the said representation of aminute hand or pointer on the said minute printing and computing partsand the said graduated seconds dial printing die and the said secondshand printing part, and the elapsing or intervening time betweensuccessive imprints being computed and recorded or indicated by theextent or degree of the superimposition of the said successive imprintsfrom the said series of marks or graduations extending over apart of thecircumference of the said minute printing and computing part.

10. In a machine for printing or record ing the time of day, andcomputing and printing or recording the time elapsing or interveningbetween successive imprints, a stationary clock dial printing die, and agraduated seconds dial printing die, an hour hand printing part, aminute printing and computing part adapted to printa representation of aminute hand or pointer, a second printing part adapted to print arepresentation of a seconds hand or pointer, the said hour and minuteprinting parts cooperating with the said clock dial printing die and thesaid second printing part cotiperating with the said graduated dialprinting die combined with an imprinting platen, an actuating clock timetrain for the said hour, minute and seconds printing parts, a series ofmarks or graduations'extending over a part of the circumference of thesaid minute printing and computing part, and a positioning device toenable successive imprints to be superimposed, the time of day beingconjointly imprinted by the said clock dial printing die the said hourprinting part, the said representation of a minute hand or pointer onthe said --minute printing and computing part and the said graduatedseconds dial printing die and the said seconds hand printing part, andthe elapsing -or intervening time between successive imprints beingcomputed and recorded or indicated by the extent or degree of thesuperimposition of the said successive imprints from the said'series ofmarks or graduations extending over a part of the circumference of thesaid minute printing and computing art, p 11. In a time printingmachine, a printing hand or pointer rotated by a clock time train toindicate time, an imprinting platen cooperating therewith, the part ofthe said imprinting platen opposite'to a portion of the said printinghand or pointer being provided with an auxiliary plunger or plug, the

surface of which when co-incident with the surface of the saidimprinting platen allows the whole of the said printing hand or pointerto be printed and when the surface of the said movable plunger or plugis withdrawn below the surface of the said imprinting platen permittingonly a portion of the said printing hand or pointer to be imprinted,combined with means for controlling the relative positions of thesurfaces of the said imprinting platen and the said auxiliary plunger orplug.

12. In a time printing machine, a printiiig hand or pointer rotated by aclock train to indicate time, an imprinting platen cooperatingtherewith, the part of the said imprinting platen opposite to a portionof the said printing hand or pointer being provided with a reciprocatingauxiliary plunger or plug, the surface of which when co-incident withthe surface of the said printing platen allows the whole of the saidprinting hand or pointer to be imprinted, and when the surface of thesaid reciprocating auxiliary plunger or plug is withdrawn below thesurface of the said imprinting platen permitting only a portion of thesaid printing hand or pointer to be imprinted, coinbined with a lever orhandle to control the position of the said reciprocating auxiliaryplunger or plug.

13. In a time printing machine, a stationary dial printing die, aprinting hand or pointer rotated by a clock time train in juxtapositiontherewith to indicate time, an imprinting platen cooperating with thesaid stationary dial printing die and the said printing hand or pointer,the part of the said imprinting platen opposite to a portion of the saidprinting hand or pointer being provided with a vertically movableauxiliary plunger or plug, the surface of which when co-incident withthe surface of the said imprinting platen allows the said dial printingdie and the whole of the said printing hand or pointer to be imprinted,and when the surface of the said vertically movable auxiliary plunger orplug is withdrawn below the surface of the said imprinting platenpermitting only a portion of said hand or pointer and the whole of thesaid dial printing die to be imprinted, combined With means for movingthe said auxiliary plunger or plug vertically with relation to the saidimprinting platen.

14. In a time printing machine, a stationary dial printing die, aprinting hand or pointer rotated by a clock train in juxtapositiontherewith to indicate time, an imprinting'platen cooperating with thesaid stationary dial printing die and the said printing hand or pointer,the part of the said imprinting platen opposite to a portion of the saidprinting hand or pointer being provided with a vertically movableauxiliary plunger or plug the surface of which when co-incident with thesurface of the said imprinting platen allows the said dial printing dieand the whole of the said printing hand or pointer to be imprinted andwhen the surface of the said vertically movable auxiliary plunger orplug is with drawn below the surface of the said imprinting platenpermitting only a portion or pointer being provided wlth a movableauxiliary plunger or plug, a mainoperating or imprinting lever or handlefor actuating the said imprinting platen, an auxiliary lever connectedwith the said main operating or imprinting lever or handle, intermediatelifting mechanism for the said movable auxiliary plunger or plug betweenthe said auxiliary lever and the said movable auxiliary plunger or plug,and means for moving the said auxiliary lever into and out of operativeengagement with the said intermediate lifting mechanism to control ordetermine the position of the said movable auxiliary plunger or plugwith relation to the imprinting platen when an imprint is being made.

16. In a time printing machine, a stationary dial printing die, aprinting hand or pointer rotated by a clock time train in cooperativejuxtaposition therewith, an imprinting platen for taking an imprint fromthe said stationary dial printing die and the said printing hand orpointer, the said imprinting platen being provided with a verticallyauxiliary movable plunger or plug,

the surface of which when coincident with the surface of the saidimprinting platen allows the said stationary dial printing die and theWhole of the said printing hand or pointer to be imprinted, and when thesurface of the said vertically movable auxiliary plunger or plug iswithdrawn below the surface of the said imprinting platen permittingonly a portion of the said printing hand or pointer and the whole of thesaiddial printing die to be imprinted, combined with a main operating orimprinting lever or handle to actuate the said imprinting platen, anauxiliary lever connected with the said main operating orimprinting'lever or handle, intermediate lifting mechanism for the saidvertically movable auxiliary plunger or plug, and means for moving thesaid auxiliary lever into and out of operative engagement with the saidintermediate mechanism to thereby control or determine the position ofthe surface of the said auxiliary plunger or plug relative to thesurface of the said imprinting platen at the time an imprint is beingmade.

17. In a time printing machine, the combination of a supporting baseplate provided with a tubular socket underneath; a platen; a platencarrier having a plunger extending downward through said tubular socketand supporting the platen; an operating lever pivoted under thesupporting base plate and engaging the plunger to move the platen toimprinting position; a removable case extending above the base plate andsecured thereto; and a time clock train and cooperating printing partssupported in and removable with said removable case.

18. In a time printing machine, a supporting base plate provided with atubular socket, a platen frame or carrier carrying and supporting animprinting platen and a pivoted ratchet pawl and having a circularextension or plunger extending downward through the said tubular socket,an operating or imprinting lever or handle pivoted beneath the saidsupporting base plate and extending outwardly therefrom and C06 eratingwith the said circular extension or plunger to lift the said platenframe or carrier and the said imprinting platen into the imprintingposition, comblned with a removable case extending above the saidsupporting base plate and fastened thereto, the said case having frontand rear extensions or chambers, inclosing and supporting the inkingribbon and its front and rear moving or feeding shafts, the said rearmoving or feeding shaft having a ratchet wheel aflixed thereto and thesaid pivoted ratchet pawl carried by the said platen frame or carrierengaging with the said ratchetwheel on the said rear moving onfeedinginking ribbon shaft when the said platen frame or carrier and the saidimprinting platen is lifted to the imprinting position by the saidoperating or imprint-ing lever or handle, the said ratchet wheel and thesaid rear inking ribbon, moving or feeding shaft and the inking ribbonbeing moved or turned while the said imprinting platen, the said platenframe or carrier and the said ratchetnpawl are moving downward.

19. In a time print-ing machine, the combination of a supporting baseplate; a removable case above the base plate and secured thereto; aclock time train with cooperating printing parts supported by andremovable with said removable case; an operating handle; a movableplaten frame between the base plate and the removable case in operativerelation to the operating handle; and a work supporting platform on theplaten frame extending outwardly beyond the printing parts and providedwith positioning means to position the work to be imprinted.

20. In a .machine for printing or recording the time of day, andcomputing and recording or indicating the time elapsing or interveningbetween successive imprints, a stationary clock dial printing die, atime printing and computing part adapted to print a representation of aclock hand or pointer to cooperate with the imprint from the said clockdial printing die and indicate the time of daycombined with one or moreprinting marks or graduations extending over part of the circumferenceof the said time-printing and computing part, and a positioning deviceto enable successive imprints from the said time printing and com; I

puting part to be superimposed, the extent or degree of thesuperimposition of the said successive imprints from the said timeprinting and computing part indicating and recording the time elapsingor intervening between the said successive imprints.

' 21. In a machine for printing or recording the time of day andindicating elapsed time between successive imprints, the combination ofa stationary dial printing die; a printing and computing part injuxtaposition thereto adapted to be rotated by a clock time train; aplurality of printing marks or time graduations disposed in aparti-circular line on said printing and computing part; means to printsimultaneously from the dial die and the printing and computing part;and positioning meansto enable successive imprints from the printing andcomputing part to be superposed, the degree of superimposition of thesuccessive imprints from the printing and computing part indicatingelapsed time between said imprints.

22. In a time printing machine, the combination of a clock-drivenunitary printing part to indicate time; a platen to cooperate therewith;an auxiliary plunger mounted in said platen and at times supplying partof the working face of the platen opposite to a portion of said printingpart; and provision for operating the platen and said plunger togetheror separately, to print from all or only a portion of said printingpart.

23. In a time printing mechanism, the combination of die meanscomprising a dial and an index character; and means for imprintingalternatively said entire index character or only a part thereof.

24. In a time printing mechanism, an imprinting die having an elongatedindex character thereon in combination with platen means for varying theamount of the character imprinted.

25. In a time printing mechanism, the combination of an imprinting diehaving an index character thereon and differential platen means forvarying the amount of the character imprinted.

26. In a time printing mechanism, the combination of dial printingmeans; pointer printing means; and means for making successive imprintsof the pointer including means to difierentiate the appearance of onesuch pointer imprint from the appearance of another such pointerimprint.

27. In a time printing mechanism, the combination of die means includinga dial and a pointer, a differential platen cooperating therewith, andhandle actuated means for effecting imprinting operations, said handlehaving means alternatively to render the entire platen or only a partthereof efi'ective in making imprints. V

28. In a time printing mechanism, the combination of stationary dialprinting means; clock-driven index printing means; provision for makingimprints by said index means to indicate difl'erence in time phase; andmeans to difierentiate. the appearance of index imprints of differentphase.

29. In a time printing mechanism, the combination of dial printingmeans; index printing means; provision for making imprints of differenttime phase by said index means; means for printing graduations betweenindex imprints of different phase, and means to distinguish between theappearance of imprints of diflerent phases,whereby the interveninggraduations indicate elapsed time.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses, this 5th day of September A. D.1903.

JOHN 0. WILSON. Witnesses:

A. It. LARRABEE, A. L- NUssER.

